Basic commands for the Linux vi Editor

Command	Description
i	insert mode, (ESC to exit insert mode) allows text to be entered on the screen
a	Append to right mode
/word	Move to the occurrence of "word"
n	Locate the next occurrence
w	Advance to the next word
e	Advance to the next end of a word
b	Move to the previous word
3b	Move backward 3 words
yy	Copy line (then move cursor and use p to paste after current cursor line)
dd	delete line
3dd	delete 3 lines
D	Delete remainder of a line
dw	Delete word
x	Delete character
o	Open space for new line below the cursor line
O	Open a line above the cursor
CTRL-w	Move back a word in append mode
u	Undo last
U	Undo all changes to current line
.	In command mode, repeat the last text changing the command on the current line
:w newfilename	save the file to newfilename from the command mode
:wq	save and quit
:q!	quit without saving
r	replace then typa a character ot be replaced with r then return to break up a line
J	join 2 lines
s	substitute (sentence) typed text over a character, ESC when done
cw	change word
c	change part of a line from the cursor to the end of the line
cc	substitute new text for aline, ESC when done
h	move the cursor back one space
H	move the cursor to the highest line on the screen
L	move the cursor to the lowest line on the screen
M	position the cursor at the midpoint on the screen
G	last line in the file
0 (zero)	Move the cursor to the beginning of the line it is on
view filename	Open a file for viewing only
set number	Turn on line numbers
set nonumber	Turn off line numbers
Options
autoindent	(ai ctrl-d to move to the left
showmatch	match brackets and parenthesis
tabstop=4
wrapmargine(wm)	when line is wrapped (80-value)
:2 copy 4	Place a copy of line 2 after line 4.
:1,4 copy 7	(lines 1-4)
:n	Access the next file for editing